Serve up your drinks with style and substance in Zwilling Sorrento 12-Ounce Coffee Glass Mug. Each glass has been designed to ensure the optimal temperature of your drink of choice and maintains their drink’s ideal temperature. Constructed from high quality, sturdy borosilicate glass, the double wall glasses are exceptionally durable. They are dishwasher safe, lightweight, and break-resistant, making them perfect for outdoor dining, dinner parties, and everyday use.